Acid test for carbonates. A piece of limestone being treated with dilute hydrochloric acid. The acid reacts with the calcium carbonate in the limeston

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Acid test for carbonates. A piece of limestone being treated with dilute hydrochloric acid. The acid reacts with the calcium carbonate in the limestone forming calcium chloride, water and bubbles of carbon dioxide. This is a classic test for carbonate rocks.

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Photo credit: © Science Photo Library / Alamy / Afripics
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